How to set alphanumeric labels (1-D histogram)
// Setting alphanumeric labels in a 1-d histogram
// author; Rene Brun
void labels1()
{
const Int_t nx = 20;
char *people[nx] = {"Jean","Pierre","Marie","Odile","Sebastien","Fons","Rene",
"Nicolas","Xavier","Greg","Bjarne","Anton","Otto","Eddy","Peter","Pasha",
"Philippe","Suzanne","Jeff","Valery"};
TCanvas *c1 = new TCanvas("c1","demo bin labels",10,10,900,500);
c1->SetGrid();
c1->SetBottomMargin(0.15);
TH1F *h = new TH1F("h","test",nx,0,nx);
h->SetFillColor(38);
for (Int_t i=0;i<5000;i++) {
h->Fill(gRandom->Gaus(0.5*nx,0.2*nx));
}
h->SetStats(0);
for (i=1;i<=nx;i++) {
h->GetXaxis()->SetBinLabel(i,people[i-1]);
}
h->Draw();
TPaveText *pt = new TPaveText(0.6,0.7,0.98,0.98,"brNDC");
pt->SetFillColor(18);
pt->SetTextAlign(12);
pt->AddText("Use the axis Context Menu LabelsOption");
pt->AddText(" \"a\" to sort by alphabetic order");
pt->AddText(" \">\" to sort by decreasing vakues");
pt->AddText(" \"<\" to sort by increasing vakues");
pt->Draw();
}
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